Re-Hab Clay Mask with honeycomb and kaolin clay deeply conditions stressed, sensitized hair to rebuild strength. 95% natural-origin, 99% biodegradable. No silicones, parabens or artificial colorants. Q: What is natural-origin? A: We consider an ingredient to be of natural origin if it is unchanged from its natural state or has undergone processing yet still retains greater than 50% of its molecular structure from the original plant or mineral source. To use: After using a Biolage R.A.W. shampoo, smooth evenly from roots to ends. Leave in 5 minutes. Rinse thoroughly. In case of contact with eyes, rinse them immediately.